Idshh



'TLHRENEI, GWRMANY.

wma-z, M141 in "mi Juno '39, 13%, 'JILIXI, 421,360, LX150, 169.

alkaline summon with which the-fabric i2- aEtewrmdheated.

The p eaem. inventiun differs essentially 13mm thew known prawimei; in mm; the fabric is; first; treated with an aifimline solution and 5 5 1.02102 white that the parts f the i'mbrir: which are in farm 21 120M011, linen, part; of the design am not pwmcted againsfi the action of fake alkaline solution by a mechmaicnlly-mting prometiw mawaial, but by a chemicallymuting mubstanc, such as acids 60 or suitable salts or, (midis. I

, This prawns is carried out in QHBDPQIflr Lion-*that m to any, the neutralizing ssubstamce is printed an the W fabric, impreg- MFA 113 0012.? mated with the fillmline solution in sucha, 65

Mining 01: nmwnerthm Hm mid alkaline selution-is new, haw mm firmizad bef'om 'bhecontmctile mtion, which humming a'st's in sitar lapse of a few 2 12mm, has

or wholly commenmefi, at the parts which ME: to mceive .the'impresmion.

The, opamfion is :aubm-antially 5w follows '1. The fabricnr'ymrmwhich is mmwhite, v or eveniy mmfiiifififld, evenly fiyed or previouraly prizcwed, placed on machine for priming in several 001mm and is than imprag 7 5 A 21m parts mated by meam: 051' un'engmyvad b10911; mylinwaifit gmsfie filer o'ver itwwhalea smrfme with thickened 0r non-thiflkened to ,Bwm animation y hedies musstipmfiwaml is at $119 same time ong'uis'a 51m samwmachine prinwd colon: by mamas 8::

f one 02" sevmal zauceaamive mllem on which thaaa crpazrlika effect in) be promced; is vangrawed, the mid culorbeing, for insthn ce, ccmposafi of mm lit-m of mama? and six hum. fired gmm of Bri'fiiah gum-0r roaated starch with the addition 91. m1 midi 0 "adds, such as acetic amid, wrtzwic mid, a r hydrochloric) acid, s'fiwmld which partmfly or holly memaralfze the cansm, bic soda wnfl fiwmhy pmvem th notion of the Water. 1?; inateaflbfi afifi'ing mama to the coiors suitable 5mm mmybw empluyed-as the new 1 4 manning matsriui wch, for example, as'aluminium Sulfate, chlmid. of magnesium. tin

523 b or swmmous @hlorid, pm'ohhorid of iron, 5 acamte of aluminium mid chmmates, ace mm of chromium, mm nitrate, and the 1ike-- avhfich by a double remtign partially or wholly amiatmlifm the fihfifi'iiM swim mm'i thereby prem'sdv 1am ation 03". Hm man a m1 tha paws of mu containing acid chromates, such as acid potassium chromate, and the said fabric or yarn be then passed through a bath of hotsulfuric and oxalic acids, a white crepe etfcct is obtained, as the action of the soda solution is stopped by the chromic acid of the said chromate and the indigo decomposed by the free chromic acid obtained in the acid bath.

6. The fabric or yarn impregnated with betamaphthol sodium and the like, as described in 3", are treated with a 30" to 50 Baum solution of caustic soda and then with dyes with the addition of acids-such as. for example, hydrochloric or acetic acidwith stannous chlorid, bisullites, zinc powder, or other reducing substances, which prevent the formation of diazo dyes. The fabric or yarn is then dyed with diazotizcd amido compounds-such as, for instance, chlorid of naphthylamin. lly this means a white crepe effect is obtained on a colored ground, as the acids and salts contained in the dye stop the contracting, action of the soda solution, and the reducing-salts at the same time prcvciit the formation of the diazo dyes.

(3 Ifalkali-resistingsubstantivedyes,such asericin, be dissol ed in a 30 to 50 Baume solution of caustic soda and be then applied to a fabric or yarn and if the said yarn or fabric is then treated with dye to which an acid, such as acetic acid, and a reducing substance, such as stannous chlorid or powder of zinc, are added, a white crepe ct'fcct is directly obtained on a colored ground, as the acid present in the dye stops the contracting, action of the soda solution and the reducing substance in combination with the acid decomposes the dye in the caustic-soda solution.

I claim as my invention- 1. A process for fOlllllll crpelike patterns or efieets on fabric or yarn of vegetable origin, consisting in inipregnatingthc same with a caustic-alkali solution, and then printing with a neutralizing substance, such' as speei tied, before the caustic alkali has com mencod to act, substantially as described,

A process for forming crepe-like patterns or effects on fabric or yarn of vegetable origin, consisting in i mprcgnating the same,with a caustic-alkali solution, and then printing with a neutralizing, substance and dyestuffs, before the caustic alkali has commenced to act, substantially as described.

3. A process forforniing crepe-like patterns or effects on fabrics or yarn of vegetable olriin, consisting in impregnating the same with a caustic-alkali solution, and their before the caustic alkali has commenced to act, printing with asalt, such as specified, the oxide of which become fixed in the fibers and colored by the reaction so as to obtain a colored crepe effect, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH \VEISS.

W itnesscs:

AUGUST WINTER,

At'or's'r Gmsnnnenn. 

